#backend-development articles

MSManikandan Smanikandan4411.hashnode.dev1d ago · 4 min read

Generics Concepts in Java

Introduction Generics in Java allow us to write classes, interfaces, and methods that can work with different data types while providing type safety. Generics are commonly used with the Java Collectio

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KKumaravelbuildbreaklearndev.hashnode.dev1d ago · 19 min read

REST APIs for Beginners: What I Learned While Building a Spring Boot Application

REST APIs for Beginners: What I Learned While Building a Spring Boot Application When I first started learning REST APIs, the idea seemed simple. GET retrieves data.POST creates data.PUT updates data.

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SHSaul Hernandezsaul-lara.hashnode.dev2d ago · 4 min read

How URL Redirects Actually Work

I'll be sharing the process of an URL Shortener development from scratch. In this post, I'll be adding the redirection feature when you request the original URL. The purpose of this project is learn h

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CCheckNumberchecknumberofficial.hashnode.dev3d ago · 5 min read

Migrating Legacy MICR Data Extraction to Modern Computer Vision Pipelines

The migration of Magnetic Ink Character Recognition (MICR) data extraction from legacy, template-based systems to modern computer vision pipelines is a common architectural challenge in financial engi

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AUAman Upadhyaydev-jedi.hashnode.dev4d ago · 18 min read

Authentication and Authorization in Backend

So far in this series, we've talked about HTTP, routing, serialization, and how data moves between clients and servers. But eventually, every backend application reaches two very important questions:

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MSManikandan Smanikandan4411.hashnode.dev4d ago · 4 min read

I/O Stream Concepts in Java

Introduction I/O (Input/Output) Streams in Java are used to read data from a source and write data to a destination. Java provides I/O classes mainly through the java.io package. There are two main ty

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MSManikandan Smanikandan4411.hashnode.devAug 21 · 4 min read

File Handling Concepts in Java

Introduction File Handling in Java is used to create, read, write, update, and delete files. Java provides classes mainly through the java.io and java.nio.file packages for working with files. 1. Fil

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DRDaksh Ramrakhyanidaksh-codes.hashnode.devAug 20 · 4 min read

What I Learned Building Backups for a Local, LAN-Based SQLite App

I build and maintain a billing and invoice system that runs entirely on a client's local network — no cloud, no internet dependency. One PC hosts the app, other PCs on the same WiFi connect to it thro

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XMXIANYU MOfisherwp.hashnode.devAug 21 · 5 min read

Why I Built a Read-Only Reconciliation Layer for WooCommerce Stripe Payments

Payment integrations are usually described as a checkout problem: collect payment, receive a webhook, update the order, and continue fulfillment. The harder problem begins when those steps disagree. A

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MSManikandan Smanikandan4411.hashnode.devAug 19 · 11 min read

Error and Exception Handling in Java

Introduction While developing Java applications, errors and unexpected situations can occur during program execution. For example: Dividing a number by zero Accessing an invalid array index Reading

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